Rowing exercise machine

Abstract

A rowing exercise machine comprises a base, a seat mounted on the base, two rowing rods pivotally mounted on the base, an actuating wheel having a shaft rod, two crank rods fastened at one end with the shaft rod, and a damping device. The rowing rods are respectively pivoted at one end with the other end of the two crank rods such that the rowing rods can be swiveled along a circular path in a reciprocating manner. The damping device comprises a fly wheel and a gauge for regulating the damping magnitudes. The fly wheel is linked with the actuating wheel.

What is claimed is:  
     
         1 . A rowing exercise machine comprising; 
 a base;    a seat mounted on said base;    two rowing rods pivotally mounted on said base;    said base further provided with an actuating wheel, two crank rods, and a damping device, said actuating wheel being pivotally mounted on said base and provided with a shaft rod fastened therewith, each of said two crank rods having an arm with a fastening end which is fastened with one end of said shaft rod, each of said two crank rods further having a horizontal rod portion which is provided with a pivoting portion for pivoting one end of the rowing rods, said fly wheel being linked with said actuating wheel by a transmission belt, and with said gauge being provided with means to control and display a damping magnitude of said damping device.    
     
     
         2 . The rowing exercise machine as defined in  claim 1 , wherein said horizontal rod portion is provided with an outer tube fitted thereover whereby said outer tube is provided with two lugs, with each having a through hole.  
     
     
         3 . The rowing exercise machine as defined in  claim 1 , wherein said pivoting portion of said crank rods is provided with a plastic ring fitted thereover.  
     
     
         4 . The rowing exercise machine as defined in  claim 1 , wherein said actuating wheel and said fly wheel are protected by a shield.  
     
     
         5 . The rowing exercise machine as defined in  claim 1 , wherein said arm of said crank rods is provided with a plurality of fastening holes for fastening said horizontal rod portion of said crank rods.  
     
     
         6 . The rowing exercise machine as defined in  claim 1 , wherein said horizontal rod portion of said crank rods is pivoted with a circumference of said actuating wheel.  
     
     
         7 . The rowing exercise machine as defined in  claim 6 , wherein said actuating wheel is provided in the circumference thereof with a plurality of fastening holes which are different in distance from an axis of said actuating wheel for fastening said horizontal rod portion.  
     
     
         8 . The rowing exercise machine as defined in  claim 1 , wherein said rowing rods are provided with an expandable adjustment portion.